Robonaut 1A is a remotely operated, experimental astronaut assistant developed by NASA and DARPA to handle tools and other small objects. In 2011 NASA sent Robonaut 2 to the International Space Station. After onboard testing with Robonaut 2, a later version may go to work outside the space station. It would be operated by an astronaut who remains inside, minimizing the risk to astronauts for exterior repairs and maintenance of the station. Robonaut 2 tweets from the International Space Station as @AstroRobonaut. NASA transferred Robonaut 1A to the Museum in 2014.